High Quality Custom Molded Rubber Products

Rubber Grommet Supplier

Jefferson Runner is a supplier of  rubber grommets which may be typically  used to protect wire, hose, pipe or other objects passing through a panel hole. Rubber grommets  are also employed  as vibration dampers, finishing components and spacers. Rubber grommets can easily slide into a pre-drilled panel hole.rubber grommet supplier

Jefferson Rubber offers  a variety of standard rubber grommets and military rubber grommets. We manufacture custom grommets and other rubber components to your spec.. Rubber grommets are manufactured in a variety  of rubber compounds including, silicone, Buna-N, Viton® Neoprene and EPDM. Our military rubber grommets meet the requirements of MS-35489 military regulations and range in a variety of inner diameters, outer diameters, and groove widths.

Rubber grommet applications include  motors, tools, cars trucks, trailers, appliances, electronic equipment and many others. Grommets  are used to protect against the sharp edges caused  by drilled holes. If you application is for  air lines, rope, cable, wiring or tubing, rubber grommets is your solution.

 

Types of Rubber Grommets

Rubber Insulation Grommets

Rubber insulation grommets have been designed symmetrically with an ID, OD, overall thickness, groove diameter and groove thickness. These grommets are used when a wire, tube or other objects are passed through metal, plastic or any material that may damage the outside surface of the object.

 

Mil-Specification  Rubber Grommets

 Mil Spec rubber grommets are also insulation grommetsthat are manufactured using  military spec rubber compounds. Mil spec grommets can be manufactured in many sizes noted by the  MS-35489 and AN-931 series.  These mil spec grommets are required  in accordance with Specification NASM-3036 Composition A (Nitrile) or B (Silicone).The compounds for these parts are made to combat  fungus or high temperature.


Vibration Mount Grommets

Vibration mount grommets are utilized for noise reduction and protection from the forces generated in compression. These parts are designed with flanges that are not equal. The thicker of the flanges is intended to be the vibration isolator. Typical uses include mounting  a small fan or motor.

Special ID Grommets:

Used to protect an item passing  through a panel where a standard round straight hole insulation grommet cannot be used.  These grommets may feature holes that are square, diagonal, tapered or uniquely configured inside diameters.


Blind and Plug Grommets:

These grommets are  used to seal off an aperture in a panel. Blind and Plug grommets are often used when a hole has been stamped into a panel for possible later  future use but  hole needs to be sealed before production.


Extended Neck Grommets

Utilized for additional protection, rigidity, and stability for the item that is being passed through a housing. Often used for  electrical wire that exits the housing of a unit and as  plug for  appliance.

 

Electrical Bushings

Electrical bushings  protect  wires that pass through a panel.  Used in appliances such as  an iron, power washer wand or similar.

Mounting Hole Grommets

Mounting hole grommets are employed when  a large grommet flange is not practical because of  space limitations.


 
Oval Grommets:

Used as a conduit where an oval shaped hole has been used  and or for proteaction of an oval shaped item passing  through a panel.

 

Multiple Hole Grommets

Used as a conduit to protect two or more items that are to be passed through a panel.

 

Horseshoe Grommets:

Horseshoe grommets may be utilized for unique applications when  a traditional insulation grommet cannot be installed.

Rubber Grommet Typical Size Chart

Jefferson can manufacture a wide range of grommets in many sized and configurations. The chart below are typical dimensions

 

Inside Diameter

B Groove Width

C Groove Diameter

D Outside Diameter

E Overall Thickness

0.094

0.062

0.438

0.624

0.219

7/64

3/64

1/2

11/16

9/32

1/8

1/32

3/16

1/4

3/32

1/8

1/16

7/16

5/8

3/16

1/8

1/16

1

1 1/4

1/4

1/8

3/32

3/8

1/2

5/16

1/8

9/32

3/8

1/2

1/2

1/8

1/16

1/4

11/32

3/16

1/8

1/4

5/16

7/16

3/8

1/8

1/8

5/16

7/16

1/4

5/32

1/16

1/4

3/8

3/16

5/32

3/32

1/4

7/16

3/8

0.180

0.062

0.312

0.437

0.180

0.187

0.055

0.240

0.396

0.199

3/16

1/32

5/16

7/16

7/32

3/16

1/32

11/16

7/8

7/32

3/16

1/16

9/32

7/16

7/32

3/16

1/16

5/16

7/16

3/16

3/16

1/16

5/16

1/2

1/4

3/16

1/16

9/16

3/4

3/16

3/16

3/32

9/32

7/16

7/32

3/16

3/32

11/32

5/8

3/8

3/16

1/8

5/16

7/16

1/4

3/16

3/16

5/16

7/16

5/16

3/16

3/16

3/8

5/8

3/8

3/16

1/4

5/16

7/16

3/8

3/16

1/8

5/8

7/8

1/4

3/16

5/8

7/8

1

13/16

13/64

1/8

13/32

9/16

3/8

7/32

1/16

5/16

7/16

3/16

7/32

3/64

7/16

5/8

11/64

15/64

3/16

3/8

5/8

3/8

1/4

1/16

3/8+

1/2

1/4

1/4

1/16

7/16

5/8

3/16

1/4

1/16

1

1 1/4

1/4

1/4

3/32

3/8+

1/2

1/4

1/4

1/8

3/8+

1/2

1/4

1/4

1/4

7/16

5/8

3/8

1/4

1/4

15/32

5/8

1/2

1/4

1/8

7/16

5/8

1/4

1/4

3/16

7/16

5/8

5/16

1/4

3/16

1/2

5/8

7/16

17/64

1/16

15/32

5/8

5/16

17/64

1/16

7/16

5/8

5/16

9/32

1/4

15/32

11/16

7/16

9/32

1/16

3/8

9/16

1/4

5/16

1/16

7/16

9/16

3/16

5/16

1/16

7/16

5/8

9/32

5/16

1/16

9/16

13/16

5/16

5/16

1/16

3/4

1

5/16

5/16

3/32

7/16

5/8

5/16

5/16

3/32

15/32

3/4

11/32

5/16

1/8

9/16

13/16

3/8

5/16

1/8

3/4

1

3/8

5/16

3/16

9/16

13/16

3/8

5/16

3/16

9/16

13/16

7/16

5/16

3/16

3/4

1

7/16

5/16

1/4

9/16

13/16

1/2

5/16

1/4

3/4

1

1/2

5/16

3/8

3/8

9/16

1/2

5/16

1/8

3/4

1

1/2

5/16

1/8

1/2

23/32

1/2

5/16

1/16

7/16

9/16

3/16

11/32

1/16

17/32

25/32

1/4

3/8

1/16

1/2

5/8

1/4

3/8

1/16

1/2

11/16

9/32

3/8

1/16

5/8

7/8

5/16

3/8

1/16

1

1 1/4

1/4

3/8

3/16

9/16

13/16

3/8

3/8

1/4

1/2

3/4

1/2

3/8

1/4

5/8

7/8

1/2

3/8

3/8

9/16

3/4

3/4

3/8

1/8

5/8

7/8

3/8

3/8

3/16

5/8

7/8

7/16

3/8

1/8

17/32

3/4

3/8

3/8

17/32

13/16

7/8

3/4

3/8

1/8

1/2

5/8

13/32

3/8

3/8

1/2

5/8

5/8

3/8

1/8

9/16

13/16

3/8

0.380

0.500

0.560

0.750

0.750

7/16

1/16

9/16

3/4

1/4

7/16

1/16

11/16

15/16

5/16

7/16

1/8

11/16

15/16

3/8

7/16

17/32

13/16

7/8

3/4

7/16

5/32

9/16

11/16

11/32

7/16

3/16

9/16

11/16

3/8

7/16

3/16

11/16

15/16

7/16

7/16

1/4

11/16

15/16

1/2

7/16

1/8

11/16

15/16

3/8

7/16

1/4

1 3/4

2 1/8

1/2

7/16

1/8

9/16

3/4

5/16

0.438

0.125

0.563

0.750

0.313

0.440

0.140

0.560

0.690

0.330

1/2

1/16

13/16

1 1/16

5/16

1/2

1/16

1

1 1/4

1/4

1/2

1/16

1 1/4

1 1/2

1/4

1/2

1/16

1 7/16

1 3/4

3/8

1/2

3/32

3/4

7/8

11/32

1/2

3/32

3/4

31/32

9/32

1/2

3/32

25/32

1 1/16

11/32

1/2

1/8

3/4

1

1/2

1/2

1/4

13/16

1 1/16

1/2

1/2

3/8

3/4

1

5/8

1/2

1/8

13/16

1 1/16

3/8

1/2

3/16

13/16

1 1/16

7/16

1/2

1/16

5/8

13/16

9/32

1/2

3/16

11/16

1 1/4

3/8

1/2

1/2

13/16

1 1/16

13/16

9/16

1/16

13/16

1 1/16

5/16

9/16

1/16

1 3/32

1 9/32

3/8

9/16

3/16

7/8

1 1/16

7/16

9/16

1/4

13/16

1 1/16

1/2

9/16

3/8

7/8

1 1/16

5/8

9/16

1

13/16

1 1/8

1 1/4

9/16

3/16

13/16

1 1/16

7/16

9/16

1/16

3/4

7/8

15/64

5/8

1/16

7/8

1 1/8

5/16

5/8

1/16

1 1/4

1 1/2

1/4

5/8

3/32

31/32

1 1/4

7/16

5/8

1/8

7/8

1 1/8

3/8

5/8

3/16

7/8

1 1/8

7/16

5/8

1/4

7/8

1 1/8

1/2

5/8

5/16

29/32

1 1/8

5/8

5/8

5/8

7/8

1 1/16

7/8

41/64

7/64

57/64

1 1/16

23/64

11/16

1/16

1

1 5/16

3/8

11/16

1/8

1

1 5/16

7/16

11/16

3/16

1

1 5/16

1/2

11/16

1/4

1

1 5/16

9/16

11/16

1/8

7/8

1 1/16

5/16

3/4

1/16

1 1/16

1 3/8

3/8

3/4

1/16

1 1/4

1 5/8

1/4

3/4

1/16

1 7/16

1 13/16

3/8

3/4

1/8

1 1/16

1 3/8

7/16

3/4

1/8

1 1/4

1 5/8

5/16

3/4

3/16

1 1/16

1 3/8

1/2

3/4

1/4

1 1/16

1 3/8

9/16

3/4

1/4

1 1/4

1 5/8

7/16

3/4

3/16

1 1/4

1 5/8

3/8

0.750

0.150

0.910

1.190

0.410

0.750

0.060

0.940

1.120

0.250

0.750

0.359

1.045

1.375

0.625

13/16

9/16

15/16

1 1/4

7/8

7/8

1/16

1 1/4

1 5/8

7/16

7/8

5/64

1 3/16

1 3/8

13/32

7/8

1/8

1 1/4

1 5/8

1/2

7/8

9/64

1 3/16

1 3/8

13/32

7/8

3/16

1 1/4

1 5/8

9/16

7/8

1/4

1 1/4

1 5/8

5/8

7/8

3/16

1 15/64

1 9/16

3/4

7/8

1/4

1 5/32

2

1/2

7/8

1/16

1 1/16

1 3/8

3/8

7/8

1/16

1 1/2

1 13/16

3/8

7/8

1/16

1 5/8

2

7/16

7/8

1/4

1

1 1/4

3/4

1

1/16

1 3/8

1 3/4

7/16

1

1/16

1 7/8

2 1/4

7/16

1

1/8

1 3/8

1 3/4

1/2

1

3/16

1 3/8

1 3/4

9/16

1

1/4

1 3/8

1 3/4

5/8

1

1/4

1 1/4

1 1/2

1/2

1

3/8

1 3/8

1 3/4

3/4

1 1/64

1/8

1 17/64

1 33/64

3/8

1 1/8

1/16

1 1/2

1 7/8

3/8

1.19

0.25

1.50

1.75

0.50

1 1/4

1/16

2 3/8

2 3/4

7/16

1 1/4

1/4

2 3/8

2 3/4

5/8

1 1/4

1/8

1 3/8

1 9/16

3/8

1 5/16

1/16

1 5/8

2

3/8

1 5/16

1/8

1 5/8

2

7/16

1.485

0.100

1.750

2.125

0.400

1 1/2

1/16

1 3/4

2 1/8

7/16

1 1/2

1/4

1 3/4

2

1/2

1 1/2

1/4

1 3/4

2 1/8

5/8

1 1/2

1/8

1 3/4

2 1/8

1/2

1 1/2

3/16

1 3/4

2 1/8

9/16

1.500

0.060

1.750

2.000

0.250

1.60

3/8

1 3/4

2 1/8

5/8

1 3/4

1/16

1 15/16

2 5/16

7/16

2

3/32

3 5/32

3 5/8

9/32

2

1/32

2 1/2

3

9/32

2

1/8

2 1/4

2 5/8

3/8

2 1/8

1/16

2 1/2

2 7/8

7/16

2 1/8

1/8

2 1/2

2 7/8

7/16

2.500

0.250

2.750

3.125

0.500

2 1/2

1/8

3

3 1/2

3/8

2 1/2

1/4

2 3/4

3 1/8

1/2

3

1.400

3 1/2

4

11/16

3

1/8

3 1/4

3 5/8

3/8

3

3/16

3 1/2

4

5/8

3.500

0.090

3.750

4.500

0.375

3.75

3/8

4

4 3/8

5/8

3 7/8

7/8

4 3/8

5

1 3/8

4.1875

0.0720

4.7500

5.3750

0.3125

4 7/16

3/8

5 1/16

5 3/4

3/4

A Inside Diameter

B Groove Width

C Groove Diameter

D Outside Diameter

E Overall Thickness

4.300

3.000

8.500

14.000

9.000

5.600

1.000

10.800

19.000

13.500

7.700

2.000

12.700

19.100

12.700

9.50

3.20

19.10

25.40

9.50

19.050

4.800

25.400

31.800

14.300

22.200

9.500

31.800

44.500

19.000

38.10

12.80

43.50

53.50

19.10

50.800

1.600

57.200

66.700

11.100

50.800

12.700

62.000

82.600

25.400

51.00

4.80

60.50

70.20

14.20

108.000

4.600

117.400

127.000

12.700

Jefferson Rubber manufactures a wide range of custom rubber products. Please contact us to discuss any of your requirements.